1、准备工具
VS2013Apache.NMS.ActiveMQ-1.7.2-bin.zip
apache-activemq-5.14.0-bin.zip
apache-activemq-5.14.0-bin.zip
2、开始项目
VS2013新建一个C#控制台应用程序，项目中添加两个dll引用，一个是D:Apache.NMS.ActiveMQ-1.7.2-binlibApache.NMS
et-4.0目录下的Apache.NMS.dll，另一个是D:Apache.NMS.ActiveMQ-1.7.2-binuild
et-4.0debug目录下的Apache.NMS.ActiveMQ.dll。
新建一个类，MyActiveMq.cs，用于对activemq消息队列接口的封装，实现如下：
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using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using Apache.NMS;using Apache.NMS.ActiveMQ;namespace NmsProducerClasses{ public class MyActiveMq { private IConnectionFactory factory; private IConnection connection; private ISession session; private IMessageProducer prod; private IMessageConsumer consumer; private ITextMessage msg; private bool isTopic = false; private bool hasSelector = false; private const string ClientID = "clientid"; private const string Selector = "filter='demo'"; private bool sendSuccess = true; private bool receiveSuccess = true; public MyActiveMq(bool isLocalMachine, string remoteAddress) { try { //初始化工厂 if (isLocalMachine) { } else { factory = new ConnectionFactory("tcp://" + remoteAddress + ":61616/"); //写tcp://192.168.1.111:61616的形式连接其他服务器上的ActiveMQ服务器 } //通过工厂建立连接 connection = factory.CreateConnection(); connection.ClientId = ClientID; connection.Start(); //通过连接创建Session会话 session = connection.CreateSession(); } catch (System.Exception e) { sendSuccess = false; receiveSuccess = false; Console.WriteLine("Exception:{0}", e.Message); Console.ReadLine(); throw e; } Console.WriteLine("Begin connection..."); } ~MyActiveMq() { //this.ShutDown(); } /// <summary> /// 初始化 /// </summary> ///<param name="topic">选择是否是Topic ///<param name="name">队列名 ///<param name="selector">是否设置过滤 public bool InitQueueOrTopic(bool topic, string name, bool selector = false) { try { //通过会话创建生产者、消费者 if (topic) { prod = session.CreateProducer(new Apache.NMS.ActiveMQ.Commands.ActiveMQTopic(name)); if (selector) { consumer = session.CreateDurableConsumer(new Apache.NMS.ActiveMQ.Commands.ActiveMQTopic(name), ClientID, Selector, false); hasSelector = true; } else { consumer = session.CreateDurableConsumer(new Apache.NMS.ActiveMQ.Commands.ActiveMQTopic(name), ClientID, null, false); hasSelector = false; } isTopic = true; } else { prod = session.CreateProducer(new Apache.NMS.ActiveMQ.Commands.ActiveMQQueue(name)); if (selector) { consumer = session.CreateConsumer(new Apache.NMS.ActiveMQ.Commands.ActiveMQQueue(name), Selector); hasSelector = true; } else { consumer = session.CreateConsumer(new Apache.NMS.ActiveMQ.Commands.ActiveMQQueue(name)); hasSelector = false; } isTopic = false; } //创建一个发送的消息对象 msg = prod.CreateTextMessage(); } catch (System.Exception e) { sendSuccess = false; receiveSuccess = false; Console.WriteLine("Exception:{0}", e.Message); Console.ReadLine(); throw e; } return sendSuccess; } public bool SendMessage(string message, string msgId = "defult", MsgPriority priority = MsgPriority.Normal) { if (prod == null) { sendSuccess = false; Console.WriteLine("call InitQueueOrTopic() first!!"); return false; } Console.WriteLine("Begin send messages..."); //给这个对象赋实际的消息 msg.NMSCorrelationID = msgId; msg.Properties["MyID"] = msgId; msg.NMSMessageId = msgId; msg.Text = message; Console.WriteLine(message); if (isTopic) { sendSuccess = ProducerSubcriber(message, priority); } else { sendSuccess = P2P(message, priority); } return sendSuccess; } public string GetMessage() { if (prod == null) { Console.WriteLine("call InitQueueOrTopic() first!!"); return null; } Console.WriteLine("Begin receive messages..."); ITextMessage revMessage = null; try { //同步阻塞10ms,没消息就直接返回null,注意此处时间不能设太短，否则还没取到消息就直接返回null了！！！ revMessage = consumer.Receive(new TimeSpan(TimeSpan.TicksPerMillisecond *10)) as ITextMessage; } catch (System.Exception e) { receiveSuccess = false; Console.WriteLine("Exception:{0}", e.Message); Console.ReadLine(); throw e; } if (revMessage == null) { Console.WriteLine("No message received!"); return null; } else { Console.WriteLine("Received message with Correlation ID: " + revMessage.NMSCorrelationID); //Console.WriteLine("Received message with Properties'ID: " + revMessage.Properties["MyID"]); Console.WriteLine("Received message with text: " + revMessage.Text); } return revMessage.Text; } //P2P模式，一个生产者对应一个消费者 private bool P2P(string message, MsgPriority priority) { try { if (hasSelector) { //设置消息对象的属性，这个很重要，是Queue的过滤条件，也是P2P消息的唯一指定属性 msg.Properties.SetString("filter", "demo"); //P2P模式 } prod.Priority = priority; //设置持久化 prod.DeliveryMode = MsgDeliveryMode.Persistent; //生产者把消息发送出去，几个枚举参数MsgDeliveryMode是否持久化，MsgPriority消息优先级别，存活时间，当然还有其他重载 prod.Send(msg, MsgDeliveryMode.Persistent, priority, TimeSpan.MinValue); } catch (System.Exception e) { sendSuccess = false; Console.WriteLine("Exception:{0}", e.Message); Console.ReadLine(); throw e; } return sendSuccess; } //发布订阅模式，一个生产者多个消费者 private bool ProducerSubcriber(string message, MsgPriority priority) { try { prod.Priority = priority; //设置持久化,如果DeliveryMode没有设置或者设置为NON_PERSISTENT，那么重启MQ之后消息就会丢失 prod.DeliveryMode = MsgDeliveryMode.Persistent; prod.Send(msg, Apache.NMS.MsgDeliveryMode.Persistent, priority, TimeSpan.MinValue); //System.Threading.Thread.Sleep(1000); } catch (System.Exception e) { sendSuccess = false; Console.WriteLine("Exception:{0}", e.Message); Console.ReadLine(); throw e; } return sendSuccess; } public void ShutDown() { Console.WriteLine("Close connection and session..."); session.Close(); connection.Close(); } }} |
Program.cs代码如下：
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using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using System.IO;using System.Threading;namespace NmsProducerClasses{ class Program { static void Main(string[] args) { MyActiveMq mymq = new MyActiveMq(isLocalMachine: true, remoteAddress: ""); mymq.InitQueueOrTopic(topic: false, name: "myqueue", selector: false); //mymq.InitQueueOrTopic(topic: false, name: "seletorqueue", selector: true); //mymq.InitQueueOrTopic(topic: true, name: "noselectortopic", selector: false); //mymq.InitQueueOrTopic(topic: true, name: "selectortopic", selector: true); //The full range of priority values (0-9) are supported by the JDBC message store. For KahaDB three priority categories are supported, Low (< 4), Default (= 4) and High (> 4). User myuser0 = new User("0000", "Lowest", "img/p.jpg"); mymq.SendMessage(JsonUtil.ObjectToJson(myuser0), "newid", priority: Apache.NMS.MsgPriority.Lowest); User myuser1 = new User("1111", "AboveLow", "img/p.jpg"); mymq.SendMessage(JsonUtil.ObjectToJson(myuser1), "newid", priority: Apache.NMS.MsgPriority.AboveLow); User myuser2 = new User("2222", "AboveNormal", "img/p.jpg"); mymq.SendMessage(JsonUtil.ObjectToJson(myuser2), "newid", priority: Apache.NMS.MsgPriority.AboveNormal); User myuser3 = new User("0000", "BelowNormal", "img/p.jpg"); mymq.SendMessage(JsonUtil.ObjectToJson(myuser3), "newid", priority: Apache.NMS.MsgPriority.BelowNormal); User myuser4 = new User("1111", "High", "img/p.jpg"); mymq.SendMessage(JsonUtil.ObjectToJson(myuser4), "newid", priority: Apache.NMS.MsgPriority.High); User myuser5 = new User("2222", "Highest", "img/p.jpg"); mymq.SendMessage(JsonUtil.ObjectToJson(myuser5), "newid", priority: Apache.NMS.MsgPriority.Highest); User myuser6 = new User("0000", "Low", "img/p.jpg"); mymq.SendMessage(JsonUtil.ObjectToJson(myuser6), "newid", priority: Apache.NMS.MsgPriority.Low); User myuser7 = new User("1111", "Normal", "img/p.jpg"); mymq.SendMessage(JsonUtil.ObjectToJson(myuser7), "newid", priority: Apache.NMS.MsgPriority.Normal); User myuser8 = new User("2222", "VeryHigh", "img/p.jpg"); mymq.SendMessage(JsonUtil.ObjectToJson(myuser8), "newid", priority: Apache.NMS.MsgPriority.VeryHigh); User myuser9 = new User("2222", "VeryLow", "img/p.jpg"); mymq.SendMessage(JsonUtil.ObjectToJson(myuser8), "newid", priority: Apache.NMS.MsgPriority.VeryLow); int num = 20; while (num-- > 0) { mymq.GetMessage(); //Thread.Sleep(1000); } mymq.ShutDown(); //XML测试 //string xml = XmlTest.ObjToXml(); //Console.WriteLine("ObjToXml: {0}", xml); //Json测试 //User u = new User() { Id="88", Imgurl="img/88.jpg", Name="haha88"}; //string jsonstr = JsonUtil.ObjectToJson(u); //Console.WriteLine(jsonstr); } } |
3、测试
首先，需要启动消息队列，具体启动及测试消息队列步骤可见这边：点击打开链接
然后，运行项目，运行结果如下：
4、存在问题
priority并不能决定消息传送的严格消息，具体原因可见